[moderation/CI] Re: mm/fault, arch: faulthandler_disabled() also check irqs_disabled()

[syzbot ci <syzbot+ci03e14d76ec964a34@syzkaller.appspotmail.com>]

syzbot ci has tested the following series

[v1] mm/fault, arch: faulthandler_disabled() also check irqs_disabled()
https://lore.kernel.org/all/20260323100100.1031582-1-jackzxcui1989@163.com
* [PATCH] mm/fault, arch: faulthandler_disabled() also check irqs_disabled()

and found the following issue:
kernel panic: No working init found. Try passing init= option to kernel. See Linux Documentation/admin-guide/init.rst f

Full report is available here:
https://ci.syzbot.org/series/588d04e2-f5a7-4066-aba9-cf490c8f5274

***

kernel panic: No working init found. Try passing init= option to kernel. See Linux Documentation/admin-guide/init.rst f

tree:      mm-new
URL:       https://kernel.googlesource.com/pub/scm/linux/kernel/git/akpm/mm.git
base:      e716edafedad4952fe3a4a273d2e039a84e8681a
arch:      amd64
compiler:  Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8
config:    https://ci.syzbot.org/builds/8bd3f249-2a4a-447d-b51f-1302d33e5e95/config

Loading compiled-in module X.509 certificates
Loaded X.509 cert 'Build time autogenerated kernel key: d8474fe105c77daf2f25eec890f96ef8092086e8'
ima: Allocated hash algorithm: sha256
ima: No architecture policies found
evm: Initialising EVM extended attributes:
evm: security.selinux (disabled)
evm: security.SMACK64 (disabled)
evm: security.SMACK64EXEC (disabled)
evm: security.SMACK64TRANSMUTE (disabled)
evm: security.SMACK64MMAP (disabled)
evm: security.apparmor
evm: security.ima
evm: security.capability
evm: HMAC attrs: 0x1
PM:   Magic number: 2:810:182
tty ttyr8: hash matches
netconsole: network logging started
gtp: GTP module loaded (pdp ctx size 128 bytes)
rdma_rxe: loaded
cfg80211: Loading compiled-in X.509 certificates for regulatory database
Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
Loaded X.509 cert 'wens: 61c038651aabdcf94bd0ac7ff06c7248db18c600'
clk: Disabling unused clocks
ALSA device list:
  #0: Dummy 1
  #1: Loopback 1
  #2: Virtual MIDI Card 1
md: Waiting for all devices to be available before autodetect
md: If you don't use raid, use raid=noautodetect
md: Autodetecting RAID arrays.
md: autorun ...
md: ... autorun DONE.
EXT4-fs (sda1): mounted filesystem b4773fba-1738-4da0-8a90-0fe043d0a496 ro with ordered data mode. Quota mode: none.
VFS: Mounted root (ext4 filesystem) readonly on device 8:1.
devtmpfs: mounted
VFS: Pivoted into new rootfs
Freeing unused kernel image (initmem) memory: 26516K
Write protecting the kernel read-only data: 217088k
Freeing unused kernel image (text/rodata gap) memory: 1744K
Freeing unused kernel image (rodata/data gap) memory: 484K
x86/mm: Checked W+X mappings: passed, no W+X pages found.
x86/mm: Checking user space page tables
x86/mm: Checked W+X mappings: passed, no W+X pages found.
Failed to set sysctl parameter 'max_rcu_stall_to_panic=1': parameter not found
Run /sbin/init as init process
Starting init: /sbin/init exists but couldn't execute it (error -14)
Run /etc/init as init process
Run /bin/init as init process
Run /bin/sh as init process
Starting init: /bin/sh exists but couldn't execute it (error -14)
Kernel panic - not syncing: No working init found.  Try passing init= option to kernel. See Linux Documentation/admin-guide/init.rst for guidance.
CPU: 1 UID: 0 PID: 1 Comm: sh Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 vpanic+0x56c/0xa60
 panic+0xc5/0xd0
 kernel_init+0x1c6/0x1d0
 ret_from_fork+0x51e/0xb90
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Kernel Offset: disabled
Rebooting in 86400 seconds..


***

If these findings have caused you to resend the series or submit a
separate fix, please add the following tag to your commit message:
  Tested-by: syzbot@syzkaller.appspotmail.com

---
This report is generated by a bot. It may contain errors.
syzbot ci engineers can be reached at syzkaller@googlegroups.com.

The email will later be sent to:
[akpm@linux-foundation.org bigeasy@linutronix.de jackzxcui1989@163.com kuba@kernel.org linux-kernel@vger.kernel.org linux-mm@kvack.org peterz@infradead.org tglx@linutronix.de]

If the report looks fine to you, reply with:
#syz upstream

If the report is a false positive, reply with
#syz invalid